The Dodgers signed Osvaldo Martinez to a minor league contract, reports Dylan Hernandez of the Los Angeles Times. The infielder was first acquired by the Dodgers from the White Sox last July and Martinez posted a combined .489 OPS in 340 plate appearances for both clubs' Triple-A affiliates in 2012. Martinez appeared in 34 Major League games with the Marlins during the 2010-11 seasons.

The Phillies signed third baseman Josh Fields to a minor league contract, Matt Eddy of Baseball America reports (hat tip: Matt Gelb). The 29-year-old last played at the MLB level in 2010, but was once regarded as an up and coming player. He hit 23 home runs and posted a .244/.308/.480 batting line for the White Sox in 2007, though he has not come close to replicating those numbers since. Fields, a right-handed hitter who twice ranked among Baseball America's top 100 prospects, spent this past season with the Dodgers' Triple-A team. He hit 13 homers and posted a .322/.392/.488 batting line in 561 plate appearances as a corner infielder and designated hitter.

The Pirates announced that they signed right-hander Logan Kensing to a minor league deal that includes an invitation to Spring Training. The 29-year-old spent the 2011 campaign with the Yankees' top affiliate after recovering from elbow surgery in 2010.

The Diamondbacks signed first baseman Mike Jacobsto a minor league deal, tweets Eddy. Before playing, Jacobs still must serve a 50-game suspension for positive a HGH test in August. He was cut by the Rockies following the test.

The Marlins picked up right-handers Chad Gaudinand Rob Delaney on minor league deals, Eddy tweets. In nine big league seasons, Gaudin has a 4.63 ERA with 7.1 K/9 and 4.2 BB/9. Delaney spent most of 2011 with the Rays' Triple-A affiliate, posting a 1.86 ERA with 7.6 K/9 and 2.3 BB/9.

Red Sox GM Theo Epstein acquired Mike Aviles, Erik Bedard and Josh Fields in trades this weekend. He joined reporters on a conference call to discuss thosemoves and other issues pertaining to his first-place team this evening. Here are the details:

The Red Sox like the way Bedard's stuff looks this year. He "really started to look like one of the best left-handers in the league again," Epstein said.

Though Bedard was rusty in his lone start since returning from the disabled list, the Red Sox maintained interest in him since he seems healthy and has pitched in the AL East. Plus, he met Boston's biggest need – rotation help.

The Bedard deal came together at the last minute, since the Red Sox had to acquire Trayvon Robinson from the Dodgers before completing the deal with the Mariners.

As for the bullpen, Epstein says the Red Sox can get by without adding outside help. "We feel we have some depth, not only in the big leagues, but in Triple-A," he said.

Epstein declined to speak about discussions for Rich Harden, but says he has no hard feelings. It appeared last night that Boston was going to acquire Harden.

The Red Sox like Fields' "big arm" despite his command issues.

Though Epstein didn't discuss Clay Buchholz's injury in detail, he acknowledged concern over the right-hander's health.

The Yomiuri Giants have acquired third baseman Josh Fieldsfrom the Rockies, according to a Sponichi report. Patrick Newman of NPB Tracker passes along the news and says we should expect an official announcement in a few days (on Twitter).

Fields had been playing for the Rockies' Triple-A affiliate in Colorado Springs, but the Sky Sox have released him, according to the Pacific Coast League transactions page. The former first round pick had a .365/.429/.674 line at Triple-A, so the Rockies presumably released him as a formality to enable him to join the Japanese team.

Fields, 28, played for the White Sox and Royals from 2006-10. He clubbed 23 home runs in 2007, posting a .244/.308/.480 line in the process. He never replicated that success and has bounced from team to team since. The White Sox sent him to Kansas City in 2009 and the Royals non-tendered him last winter. The Pirates picked him up in December and flipped him to Colorado late in Spring Training.

Fields, 28, missed most of the 2010 season due to hip surgery, though he had 104 interesting plate appearances before being non-tendered. Aside from third base, he's dabbled at first and left field.

Fields was drafted 18th overall by the White Sox in 2004 and was once considered a top prospect. He crushed 23 home runs in 418 plate appearances with the Sox in '07, nine of which came in August of that year.

Rob Biertempfel of the Pittsburgh Tribune-Review hears that the Pirates will not release Ryan Doumit if they can't work out a trade (Twitter link). Though Doumit will earn $5.1MM this year, the Pirates like his bat.

GM Neal Huntington told Pat Lackey of Where Have You Gone Andy Van Slyke that the Pirates haven't focused on pitching in recent drafts, even though it might appear that way. The Pirates have just been selecting the players at the top of their draft board, according to Huntington. Pittsburgh picks first overall in 2011.

Huntington told reporters this morning that the goal for McCutchen at the Major League level would be for him to pitch multiple innings as a reliever. The right-hander may return to the Triple-A rotation.

The Padres and Pirates have announced their Spring Training non-roster invitees, write MLB.com's Corey Brock and Jenifer Langosch, respectively.

Among San Diego's 20 NRIs is a small handful of players with big-league experience and a decent chance of making the 25-man roster at the end of Spring Training. Here's a quick look at some of those guys:

Kevin Frandsen has spent parts of five seasons with the Giants and Angels, and he has a "good shot" of catching on with the Padres as a utility man, according to Brock. The 28-year-old plays multiple positions and would earn a salary of $575,000.

Guillermo Quiroz could challenge Rob Johnson for the backup catching job, notes Brock. Quiroz, 29, has played for four teams (Rangers, Blue Jays, Mariners and Orioles) in parts of seven seasons.

Gregorio Petit spent parts of two seasons with the A's as a utility infielder in 2008-09. The 26-year-old spent the entirety of 2010 with the Rangers' Triple-A affiliate.

Bullpen hopefuls Luis Perdomo and Scott Munter each have Major League experience. Perdomo made 35 appearances with San Diego in 2009 but only one last season, and Munter was with the Giants for parts of three seasons.

The Pirates, meanwhile, have a slightly more interesting cast of notable names:

Garrett Atkins, Jeff Clement, Josh Fields and Andy Marte form a quartet of one-time blue-chip prospects. Atkins, in particular, was an above-average player for the Rockies in 2006-07, but he declined quickly in the following years. Clement, a former catcher, was a No. 3 overall pick of the Mariners in 2005, and Fields and Marte were raw-power corner-infield prospects coming up with the White Sox and Braves/Indians, respectively.

On the pitching side, Tyler Yates has a 8.1 K/9 for his career but did not pitch in the bigs in 2010. Donald Veal, selected by the Bucs from the Cubs in the Rule 5 Draft prior to the 2009 season, is a hard-throwing but wild lefty. Brian Burres has started 54 games in his five-year career with the Orioles, Blue Jays and Pirates. Sean Gallagher was dealt from the Cubs to the A's in the deal that sent Rich Harden to Chicago, and has appeared in 91 games. Fernando Nieve has appeared in 99 games (19 starts) with the Astros and Mets in parts of four seasons.

Fields, 28, joined Kansas City a year ago in the Mark Teahen trade. Hip surgery took up most of his Royals career, though he had 104 interesting pro plate appearances before being non-tendered this month. Beyond the hot corner, he's dabbled at first base and left field.

Fields was drafted 18th overall by the White Sox in 2004 and was once considered a top prospect. He crushed 23 home runs in 418 plate appearances with the Sox in '07, nine of which came in August of that year. Earlier this month the Pirates added another former top third base prospect in Andy Marte, cutting a third one loose in Andy LaRoche.

Now that six years have passed since the 2004 draft, let's take a look at a few of the choices teams made between prospects at the same position to get a sense of who came out ahead in the great pick-by-pick spin of fate.

Justin Verlander (Tigers) vs. Phil Humber (Mets) vs. Jeff Niemann (Rays): Here we have a textbook study in the perils of pitching prospects. In Verlander, the second overall pick, the Tigers got a true ace. He has posted three top-seven finishes in the Cy Young voting already, and struck out an incredible 269 batters in 240 innings last year. Picking third, the Mets got an ace as well, sort of: Humber was eventually traded in the deal that landed them Johan Santana. Needless to say, Humber has not been an ace himself, pitching to an ERA over 5.00 at Triple-A for a second straight year in 2010. Niemann, meanwhile, has profiled somewhere in-between, though his 2010 so far suggests he may be fulfilling the promise of his status as fourth overall pick. He's pitching to a 2.83 ERA in 2010, though the strikeout rate (just 5.8 per nine innings) suggests that ERA will likely rise. Overall winner here? Everyone except the Twins.

Billy Butler (Royals) vs. Josh Fields (White Sox): Well, it certainly appears the Royals got the better of this battle of third basemen. Butler, picked 14th, didn't stick at third, but he is finally getting some attention as a legitimately excellent bat, putting up a .341/.396/.494 line in 2010 so far. Meanwhile, Fields, picked 18th, has struggled to remain on the field, and is actually now property of the Royals as well, coming over this winter in the deal for Mark Teahen. But he will miss most, if not all, of the 2010 season after having hip surgery in April. Fields, 28 in December, has had some impressive Triple-A seasons, so he may eventually fulfill his promise. Butler, however, is clearly here to stay. Overall winner? The Royals. Almost makes up for Alex Gordon!

Glen Perkins (Twins) vs. Phil Hughes (Yankees): Lost in the many months of Johan Santana trade talks back in 2007-2008, which centered around whether the Yankees would deal Phil Hughes, was the realization that the Twins could have drafted Hughes themselves. Instead, at pick 22, Minnesota took Glen Perkins, a college product out of University of Minnesota. The outlook isn't brilliant for Perkins at this point, with a 7.76 ERA in Triple-A, though his strikeout rate is at least relatively strong. Meanwhile, Phil Hughes has become one of the best pitchers in the American League, with a fantastic 74 strikeouts and 22 walks in 75.1 innings in support of his 3.11 ERA. Hughes won't be 24 until later this month. And among those who won't be celebrating his birthday? The Twins.